Direct measurement of loss angle tangent of capacitor - uses measurement of applied alternating reference voltage and voltage after application to RC network including tested capacitor

摘要

The method of capacitor loss angle tangent measurement includes supply of an alternating reference voltage Eo to a phase shifter of known type. The phase shifter has an RD' impedance network formed by a resistant R and a capacitor C'. The loss angle of the capacitor C' is to be determined. The phase shift angle chi introduced by the phase shifter is set at the value of (pi)/2 radians. This phase shift is between the reference voltage Eo and the phase shifted voltage Ex. The relationship H = Eo is measured in known fashion, for units of shifted voltage Ex and reference voltage Eo. From these results the value of the tangent of the loss angle is deduced as equal to (1 - H). is measured in known fashion, for units of shifted voltage Ex and reference voltage Eo. From these results the value of the tangent of the loss angle is deduced as equal to (1 - H). assured in known fashion, for units of shifted voltage Ex and reference voltage Eo. From these results the value of the tangent of the loss angle is deduced as equal to (1 - H).